Van top



FIG. 1 is a perspective view of the van top showing my new design it being understood that the portion shown in broken lines is for illustrative purposes only and forms no part of the claimed design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a left side elevational view thereof, with the right side being substantially a mirror image;

FIG. 4 is a rear elevational view thereof. 

The ornamental design for a van top, as shown and described. 